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Bosch CO18 18-Piece Cobalt Twist Drill Bit Assortment in Plastic Case

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Bosch CO18 18-Piece Cobalt Twist Drill Bit Assortment in Plastic Case

(13 customer reviews)

SKU:

RM82852

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Availability: Usually ships in 1 business days

Bosch CO18 Cobalt Drill Set (18 Pcs.)Bosch Power Tools and Accessories is one of the divisions within the Robert Bosch Tool Corporation, which is one of the largest power tool and accessory manufacturers in the world. Bosch provides a complete line of corded and cordless power tools and accessories engineered to survive any jobsite and allow professionals to take control of their work.Bosch CO18 Cobalt Drill Set (18 Pcs.) Features:; Bosch cobalt drill bits offer the best heat resistance and rigid thick web design for drilling in extremely hard and abrasive materials such as treated stainless steel (precipitation-hardened), cast iron and titanium. ; Cobalt Drill Bit Sets ; Item # CO18; # of Pieces 18; Description 18 pc. set in blow-molded plastic case

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Product Details

Product Length:	0.0 inches
Product Width:	0.0 inches
Product Height:	0.0 inches
Product Weight:	0.0 pounds
Package Length:	9.9 inches
Package Width:	7.4 inches
Package Height:	1.0 inches
Package Weight:	0.6 pounds
Average Customer Rating:	based on 13 reviews

Features

18-piece cobalt drill bit set
Resists up to 1100 degrees F in extra-hard materials
135-degree split point starts on contact, no walking or skating
Overall bit hardness of 66-68 HRC from the cobalt formulation; includes case
Weighs 1.3 pounds shipped

Customer Reviews

Average Customer Review: 4.5

( 13 customer reviews )
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Most Helpful Customer Reviews

8 of 8 found the following review helpful:

Very Impressed Oct 12, 2011 By D Anderton
I had a fine set of DeWalt drill bits that see light duty at home. They were adequate for wood and mediocre for plastic (with a tendency to grab and bind). However, I was recently working on an electronics project housed in a steel box with aluminum front and back panels. The DeWalt bits worked ok on the aluminum panels but would scarely scratch the paint on the steel shell. My usual practice is to drill a pilot hole with the smallest drill bit that won't likely break in the process. But, wow, I couldn't get even the smallest drill bit I dared use do more than make a modest dent in the steel shell. I purchased the Bosch drill index specifically for this project. The cobalt-alloy did the trick. I punched the holes through with nominal effort and was delighted that the drill didn't bind after penetrating the metal. These drill bits are fantastic!

I was VERY impressed.

Five stars and two thumbs up!!!!

6 of 6 found the following review helpful:

very high quality Sep 21, 2008 By Nikwax
these are very high quality bits, they are sharp and they stay sharp. I notice they have a very steep angle to them which means that they attack the material rather rapidly.

5 of 5 found the following review helpful:

Cut through steel fast Dec 08, 2009 By Joseph H. Francis
These bits are fantastic. I used one 3/8 inch bit to cut 24 holes in 3/16 steel almost like it was wood -- very fast. No sign of dulling. Excellent bits, but one small one was missing.

7 of 8 found the following review helpful:

Bosch Cobalt Drill Bit Set Aug 18, 2006 By S. Somma
I purchased these bits as cobalt is better/stronger than titanium, and therefore should last longer. One bit was missing from the set. I called Bosch and they immediately send me a replacement.

4 of 4 found the following review helpful:

Perfect Feb 02, 2011 By Nameless Faceless User
I needed to drill a 1/4 inch hole in heavy, thick 10 gauge steel. On a medium speed using a hand drill these bits made short work of it. Very sharp, very clean hole. I was quite impressed - the right tool for the job.

See all 13 customer reviews on Amazon.com